<!DOCTYPE html>
<html>
<head>
    <meta charset="UTF-8">
    <title></title>
    <script src="../js/jquery-3.3.1.min.js" type="text/javascript" charset="utf-8"></script>
    <script type="text/javascript">


        $(function () {
            $("#btn").on("click",function () {
                alert("我被点击了...");
            });
            $("#btn2").on("click",function () {
                $("#btn").off("click");
            })
        })
    </script>
</head>
<body>
<input id="btn" type="button" value="使用on绑定点击事件">
<input id="btn2" type="button" value="使用off解绑点击事件">
</body>
</html>
